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<FONT color="green">001</FONT>    /**<a name="line.1"></a>
<FONT color="green">002</FONT>     * $Id: LoginableRequestTransport.java 237 2012-10-17 02:59:59Z steven.jardine@gmail.com $<a name="line.2"></a>
<FONT color="green">003</FONT>     */<a name="line.3"></a>
<FONT color="green">004</FONT>    package com.gwt.ss.requestfactory.client.loginable;<a name="line.4"></a>
<FONT color="green">005</FONT>    <a name="line.5"></a>
<FONT color="green">006</FONT>    import com.google.gwt.core.client.GWT;<a name="line.6"></a>
<FONT color="green">007</FONT>    import com.google.gwt.http.client.Request;<a name="line.7"></a>
<FONT color="green">008</FONT>    import com.google.gwt.http.client.RequestBuilder;<a name="line.8"></a>
<FONT color="green">009</FONT>    import com.google.gwt.http.client.RequestCallback;<a name="line.9"></a>
<FONT color="green">010</FONT>    import com.google.gwt.http.client.RequestException;<a name="line.10"></a>
<FONT color="green">011</FONT>    import com.google.gwt.http.client.Response;<a name="line.11"></a>
<FONT color="green">012</FONT>    import com.google.gwt.user.client.rpc.SerializationStreamFactory;<a name="line.12"></a>
<FONT color="green">013</FONT>    import com.google.web.bindery.requestfactory.gwt.client.DefaultRequestTransport;<a name="line.13"></a>
<FONT color="green">014</FONT>    import com.google.web.bindery.requestfactory.shared.ServerFailure;<a name="line.14"></a>
<FONT color="green">015</FONT>    import com.gwt.ss.client.GwtLogin;<a name="line.15"></a>
<FONT color="green">016</FONT>    import com.gwt.ss.client.exceptions.GwtAccessDeniedException;<a name="line.16"></a>
<FONT color="green">017</FONT>    import com.gwt.ss.client.exceptions.GwtSecurityException;<a name="line.17"></a>
<FONT color="green">018</FONT>    import com.gwt.ss.client.loginable.AbstractLoginHandler;<a name="line.18"></a>
<FONT color="green">019</FONT>    import com.gwt.ss.client.loginable.HasLoginHandler;<a name="line.19"></a>
<FONT color="green">020</FONT>    import com.gwt.ss.client.loginable.LoginCancelException;<a name="line.20"></a>
<FONT color="green">021</FONT>    import com.gwt.ss.client.loginable.LoginHandler;<a name="line.21"></a>
<FONT color="green">022</FONT>    import com.gwt.ss.shared.GwtConst;<a name="line.22"></a>
<FONT color="green">023</FONT>    <a name="line.23"></a>
<FONT color="green">024</FONT>    /**<a name="line.24"></a>
<FONT color="green">025</FONT>     * Intercepts the requestfactory requests and starts the login process if necessary.<a name="line.25"></a>
<FONT color="green">026</FONT>     * <a name="line.26"></a>
<FONT color="green">027</FONT>     * @version $Rev: 237 $<a name="line.27"></a>
<FONT color="green">028</FONT>     * @author Steven Jardine<a name="line.28"></a>
<FONT color="green">029</FONT>     */<a name="line.29"></a>
<FONT color="green">030</FONT>    public class LoginableRequestTransport extends DefaultRequestTransport {<a name="line.30"></a>
<FONT color="green">031</FONT>    <a name="line.31"></a>
<FONT color="green">032</FONT>        private class LoginableRequestCallback implements RequestCallback {<a name="line.32"></a>
<FONT color="green">033</FONT>    <a name="line.33"></a>
<FONT color="green">034</FONT>            private final String payload;<a name="line.34"></a>
<FONT color="green">035</FONT>    <a name="line.35"></a>
<FONT color="green">036</FONT>            private final TransportReceiver receiver;<a name="line.36"></a>
<FONT color="green">037</FONT>    <a name="line.37"></a>
<FONT color="green">038</FONT>            public LoginableRequestCallback(final String payload, final TransportReceiver receiver) {<a name="line.38"></a>
<FONT color="green">039</FONT>                this.payload = payload;<a name="line.39"></a>
<FONT color="green">040</FONT>                this.receiver = receiver;<a name="line.40"></a>
<FONT color="green">041</FONT>            }<a name="line.41"></a>
<FONT color="green">042</FONT>    <a name="line.42"></a>
<FONT color="green">043</FONT>            /** {@inheritDoc} */<a name="line.43"></a>
<FONT color="green">044</FONT>            @Override<a name="line.44"></a>
<FONT color="green">045</FONT>            public void onError(final Request request, final Throwable exception) {<a name="line.45"></a>
<FONT color="green">046</FONT>                receiver.onTransportFailure(new ServerFailure(exception.getMessage(), exception.getClass().getName(), null,<a name="line.46"></a>
<FONT color="green">047</FONT>                    false));<a name="line.47"></a>
<FONT color="green">048</FONT>            }<a name="line.48"></a>
<FONT color="green">049</FONT>    <a name="line.49"></a>
<FONT color="green">050</FONT>            /** {@inheritDoc} */<a name="line.50"></a>
<FONT color="green">051</FONT>            @Override<a name="line.51"></a>
<FONT color="green">052</FONT>            public void onResponseReceived(final Request request, final Response response) {<a name="line.52"></a>
<FONT color="green">053</FONT>                if (Response.SC_OK == response.getStatusCode()) {<a name="line.53"></a>
<FONT color="green">054</FONT>                    String responsePayload = response.getText();<a name="line.54"></a>
<FONT color="green">055</FONT>                    GwtSecurityException caught = deserializeSecurityException(responsePayload);<a name="line.55"></a>
<FONT color="green">056</FONT>                    if (loginHandler != null &amp;&amp; caught != null) {<a name="line.56"></a>
<FONT color="green">057</FONT>                        if (caught.isAuthenticated() &amp;&amp; caught instanceof GwtAccessDeniedException) {<a name="line.57"></a>
<FONT color="green">058</FONT>                            onError(request, caught);<a name="line.58"></a>
<FONT color="green">059</FONT>                        } else {<a name="line.59"></a>
<FONT color="green">060</FONT>                            LoginHandler lh = new AbstractLoginHandler() {<a name="line.60"></a>
<FONT color="green">061</FONT>                                @Override<a name="line.61"></a>
<FONT color="green">062</FONT>                                public void onCancelled() {<a name="line.62"></a>
<FONT color="green">063</FONT>                                    onError(request, new LoginCancelException("Login Cancelled"));<a name="line.63"></a>
<FONT color="green">064</FONT>                                }<a name="line.64"></a>
<FONT color="green">065</FONT>    <a name="line.65"></a>
<FONT color="green">066</FONT>                                @Override<a name="line.66"></a>
<FONT color="green">067</FONT>                                public void resendPayload() {<a name="line.67"></a>
<FONT color="green">068</FONT>                                    send(payload, receiver);<a name="line.68"></a>
<FONT color="green">069</FONT>                                }<a name="line.69"></a>
<FONT color="green">070</FONT>                            };<a name="line.70"></a>
<FONT color="green">071</FONT>                            lh.setLoginHandlerRegistration(loginHandler.addLoginHandler(lh));<a name="line.71"></a>
<FONT color="green">072</FONT>                            loginHandler.startLogin(caught);<a name="line.72"></a>
<FONT color="green">073</FONT>                        }<a name="line.73"></a>
<FONT color="green">074</FONT>                    } else {<a name="line.74"></a>
<FONT color="green">075</FONT>                        receiver.onTransportSuccess(responsePayload);<a name="line.75"></a>
<FONT color="green">076</FONT>                    }<a name="line.76"></a>
<FONT color="green">077</FONT>                } else {<a name="line.77"></a>
<FONT color="green">078</FONT>                    String message = response.getStatusCode() + " " + response.getText();<a name="line.78"></a>
<FONT color="green">079</FONT>                    receiver.onTransportFailure(new ServerFailure(message));<a name="line.79"></a>
<FONT color="green">080</FONT>                }<a name="line.80"></a>
<FONT color="green">081</FONT>            }<a name="line.81"></a>
<FONT color="green">082</FONT>        }<a name="line.82"></a>
<FONT color="green">083</FONT>    <a name="line.83"></a>
<FONT color="green">084</FONT>        private static final String EXCEPTION_PREFIX = "//EX[";<a name="line.84"></a>
<FONT color="green">085</FONT>    <a name="line.85"></a>
<FONT color="green">086</FONT>        private static SerializationStreamFactory streamFactory = null;<a name="line.86"></a>
<FONT color="green">087</FONT>    <a name="line.87"></a>
<FONT color="green">088</FONT>        /**<a name="line.88"></a>
<FONT color="green">089</FONT>         * Deserialize the rpc exception.<a name="line.89"></a>
<FONT color="green">090</FONT>         * <a name="line.90"></a>
<FONT color="green">091</FONT>         * @param payload the exception payload to deserialize.<a name="line.91"></a>
<FONT color="green">092</FONT>         * @return the deserialized security exception.<a name="line.92"></a>
<FONT color="green">093</FONT>         */<a name="line.93"></a>
<FONT color="green">094</FONT>        private static GwtSecurityException deserializeSecurityException(String payload) {<a name="line.94"></a>
<FONT color="green">095</FONT>            if (payload != null &amp;&amp; payload.indexOf(EXCEPTION_PREFIX) != -1) {<a name="line.95"></a>
<FONT color="green">096</FONT>                try {<a name="line.96"></a>
<FONT color="green">097</FONT>                    if (streamFactory == null) {<a name="line.97"></a>
<FONT color="green">098</FONT>                        streamFactory = GWT.create(GwtLogin.class);<a name="line.98"></a>
<FONT color="green">099</FONT>                    }<a name="line.99"></a>
<FONT color="green">100</FONT>                    return (GwtSecurityException) streamFactory.createStreamReader(payload).readObject();<a name="line.100"></a>
<FONT color="green">101</FONT>                } catch (Exception e) {<a name="line.101"></a>
<FONT color="green">102</FONT>                    GWT.log(e.getMessage(), e);<a name="line.102"></a>
<FONT color="green">103</FONT>                }<a name="line.103"></a>
<FONT color="green">104</FONT>            }<a name="line.104"></a>
<FONT color="green">105</FONT>            return null;<a name="line.105"></a>
<FONT color="green">106</FONT>        }<a name="line.106"></a>
<FONT color="green">107</FONT>    <a name="line.107"></a>
<FONT color="green">108</FONT>        private final HasLoginHandler loginHandler;<a name="line.108"></a>
<FONT color="green">109</FONT>    <a name="line.109"></a>
<FONT color="green">110</FONT>        /**<a name="line.110"></a>
<FONT color="green">111</FONT>         * Constructor.<a name="line.111"></a>
<FONT color="green">112</FONT>         * <a name="line.112"></a>
<FONT color="green">113</FONT>         * @param loginHandler the login handler.<a name="line.113"></a>
<FONT color="green">114</FONT>         */<a name="line.114"></a>
<FONT color="green">115</FONT>        public LoginableRequestTransport(final HasLoginHandler loginHandler) {<a name="line.115"></a>
<FONT color="green">116</FONT>            super();<a name="line.116"></a>
<FONT color="green">117</FONT>            this.loginHandler = loginHandler;<a name="line.117"></a>
<FONT color="green">118</FONT>        }<a name="line.118"></a>
<FONT color="green">119</FONT>    <a name="line.119"></a>
<FONT color="green">120</FONT>        /** {@inheritDoc} */<a name="line.120"></a>
<FONT color="green">121</FONT>        @Override<a name="line.121"></a>
<FONT color="green">122</FONT>        public void send(final String payload, final TransportReceiver receiver) {<a name="line.122"></a>
<FONT color="green">123</FONT>            RequestBuilder builder = createRequestBuilder();<a name="line.123"></a>
<FONT color="green">124</FONT>            builder.setHeader(GwtConst.GWT_RF_HEADER, "true");<a name="line.124"></a>
<FONT color="green">125</FONT>            configureRequestBuilder(builder);<a name="line.125"></a>
<FONT color="green">126</FONT>            builder.setRequestData(payload);<a name="line.126"></a>
<FONT color="green">127</FONT>            builder.setCallback(new LoginableRequestCallback(payload, receiver));<a name="line.127"></a>
<FONT color="green">128</FONT>            try {<a name="line.128"></a>
<FONT color="green">129</FONT>                builder.send();<a name="line.129"></a>
<FONT color="green">130</FONT>            } catch (RequestException e) {<a name="line.130"></a>
<FONT color="green">131</FONT>                GWT.log(e.getMessage(), e);<a name="line.131"></a>
<FONT color="green">132</FONT>            }<a name="line.132"></a>
<FONT color="green">133</FONT>        }<a name="line.133"></a>
<FONT color="green">134</FONT>    <a name="line.134"></a>
<FONT color="green">135</FONT>    }<a name="line.135"></a>




























































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